Presentation

Stimulus presentation is driven by independent presentation components triggered by training and trial behaviours.

Implementing ISelectable and ITargetable, any StimulusPresentationBehaviour must be able to indicate itself as the current training target and be selected (though selection behaviour may be limited to indication, deferring logical selection to an unrelated component; see Selection). Additionally, a presentation behaviour must implement methods to start and end stimulus presentation. These functional promises enable any extension of the base StimulusPresentationBehaviour class to be used interchangeably by other behaviours (most prominently Presenter Collections).

A number of “Standard” stimulus presentation behaviours are provided to cover basic expected functionality like toggled colour flashes or flashing at a steady frequency.

More particular Custom Stimulus Behaviour is best implemented by extending StimulusPresentationBehaviour.

Though these behaviours are ideally unaware of their environment or the trial routines which invoke them, a certain amount of coordination may be required. The provided SSVEPTrialBehaviour or custom implementation of it need to either gather or assign stimulus frequencies to presenters. Certain paradigms are also intuitively dependent on the presentation of certain stimuli.